1304052905 has 4 divisors (see below), whose sum is σ = 1564863492. Its totient is φ = 1043242320.

The previous prime is 1304052899. The next prime is 1304052931. The reversal of 1304052905 is 5092504031.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 912764944 + 391287961 = 30212^2 + 19781^2 .

It is not a de Polignac number, because 1304052905 - 2²⁸ = 1035617449 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130405286 + ... + 130405295.

It is an arithmetic number, because the mean of its divisors is an integer number (391215873).

Almost surely, 2^1304052905 is an apocalyptic number.

It is an amenable number.

1304052905 is a deficient number, since it is larger than the sum of its proper divisors (260810587).

1304052905 is an equidigital number, since it uses as much as digits as its factorization.

1304052905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260810586.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 1304052905 is about 36111.6726973426. The cubic root of 1304052905 is about 1092.5258889288.

Adding to 1304052905 its reverse (5092504031), we get a palindrome (6396556936).

The spelling of 1304052905 in words is "one billion, three hundred four million, fifty-two thousand, nine hundred five".